king is asking the fbi to move in on murdoch's news corp, right here in the u.s. >>> and our consumer watchdog report tonight, tackles a sly scam on your phone bill. a new report about hidden fees costing consumers billions each year. it's called cramming. and today, we learned about the phone companies letting this happen. here's abc's linsey davis. >> reporter: as larry vido's phone bill grew, so did his little did he know, he was also paying $14.95 for something called voicemail monthly fee. and another 8.23 for something called my billing service monthly fee. both charges were fraudulent. >> how could this happen? how could somebody start charging my account, i guess, similar to charging my credit card without my knowledge? >> reporter: in a hearing today, we learned larry is one of as many as 20 million consumers who fall victim each year to a fraud called cramming. false charges tacked onto your phone bill costing consumers $2 billion a year. fraudsters fool your phone company into thinking that you used a special phone service. whether it's an 800-number, or, s say, a deluxe vo